Paint sprayer



April 15 1924.

ATTORNEY Apr. l5, i924,

DANIEL J'. SULLVAN, OF KANSAS CITY, MISSOURI.

PAINT SPRAYER.

Application filed May 26,

To cZZ whom t may concern:

Be it known that L DANIEL J. SULLIVAN, a citizen of the United States, residing at. Kansas City, in the county ot Jackson and State of Missouri, have invented a new and useful Paint Sprayer, of which the following is a speciication.

vMy invention relates to paint sprayers, and the object of the invention is to provide a simple, inexpensive, and etlicient device of this character which may be operated by hand grip.

l attain these objects by means of the mechanism and combination of parts illustrated in the. accompanying drawing in which-#Figure 1, is a side elevation oi' a paint sprayer embodying my invention, partly sectioned, and showing the sprayer inactive; Figure 2, is a side elevation of the paint sprayer, partly sectioned, and showing the same active and, Figure 3, is a sectional view of the nozzle portion of the device.

Similar numerals of reference refer to corresponding parts throughout the several views.

The paint sprayer comprises a body portion-an open ended hollow cylinder 1, having an inletport 2, communicating with an inlet pipe 3, for compressed air and an outlet port 4l, aligned with the port 2, and which communicates with an outlet pipe 5, which is connected between the cylinder l, and an atomizing chamber 6. rlhe cylinder is also provided with a port 7, which communicates with an inlet pipe 8, for liquid paint which is provided with a out out valve 9. A pipe 10, is connected 'between the front end of the cylinder and the lower side of the chamber 6. A nozzle 11, is removably mounted on the outer end of the chamber 6.l ln the cylinder 1, is slidably mounted a slide member or valve 12, having a transversely extending hole or passage 13, therethrough adapted for registering with the *ports 2 and Il, and also having a longitudinally eX- tending bore 14, in its forward end and a transversely extending hole or passage 15, which communicates with said bore. Associated with the valve 12, is a stem 16, on which stem is suitably mounted a handle or grip 17, having therein a channel 18, adapted for receiving the plane portion 19, of a stock or handle portion 20, associated with the lower side of the cylinder 1. 0n the front and back ends of the cylinder are mounted screw caps 21, which are re 1923. Serial No. 641,712.

spectively pierced by the pipe 10, and the stem 16, of the Yvalve member. On the rearward end ot the plane portion 19, of the stock or handle portion 20, is mounted a yielding member 22, which is extended into the channel 18, in thev handle 17, and arranged therein to constantly press against the handle to thereby hold the valve member to the limit or its bach: stroke and to yield to permit the valve member to malte its forward stroke and then react to make its back stroke, as will hereinafter be fully explained.

When the paint sprayer embodying my invention is operatively assembled, it may be operated by one hand to direct the spray and to operate the valve to render the sprayer active or inactive, as well as to regulate the spray. A liquid paint line, not shown, is connected to the inlet pipe 8, and the compressed air line, not shown, is connected to the inlet ,pipe 3. The yielding member 22, holding the valve member 12, on its back stroke, the ports 2, 4f, and 7, are thereby closed. The liquid paint line, not shown, and the compressed air line, not shown, being properly connected to the ysprayer the operator grasps the handle or stock 20, with the grip 17 with his one hand, applying enough pressure to force the valve member forward in the cylinder and thereby bring the hole 13, in the valve member to partial or complete registry with the ports 2 and e, and simultaneously bring the hole 15, likewise to a partial or complete registry with the port 7. lf complete registry is made the liquid paint will flow through the valve 9, the pipe 8, the port 7, the hole 15, the bore 14, and the pipe 10, to the chamber 6, where the paint will encounter the air coming into the chamber at right angles to the entry of the liquid paint, whereby the liquid paint will be atomized and discharged from the nozzle 11, in the form of a spray, the shape and quality of the spray being determined by the character of the nozzle. The compressed air enters from the air line, not shown, to the pipe 3, through the port 2, the hole 13, the port 4;, and the pipe 5, to the chamber 6, where it encounters the flow or" the liquid paint, as hereinabove described. 'lo render the sprayer inactive, the gripping hand pressure of the operator is released, whereupon, the yielding member 22, will react and press the valve member back to the limit of its back stroke, thus inane Closing the cylinder ports and preventing the flow of the paint and air.`

It is my experience that Where the liquid paint is atomized in the Cylinder of the valve there is more or less leakage of paintand air result-ing in spattered Work, smearing of the operator, and, frequently, of

stoppage of the valve. The provision of the chamber G, for atomizingl the liquid paint at a point remote from the valve member of the sprayer prevents leakage, and assures a free Working Valve at all times.

Having described my invention what I claim is- In a paint sprayer, the combination of a hollow cylinder, an' inlet port for liquid paint opening into said cylinder, an inlet port for compressed air opening into said cylinder, an outlet port opening into said cylinder and aligned With said last mentioned port, a. cylindrical valve member slidably mounted in said cylinder and having therethrough a passage adapted for registering With said aligned ports and a passage adapted for registering with said rst mentioned inlet port, a chamber member, a. pipe connected between said cylinder and said chamber and communicating with one ol said aligned ports, a compressed air line communicating with the aligned ports, a pipe connected to said oylinder and entering said chamber at right angles to the entry therein of said iirst mentioned pipe and adapted for communicating with the passage in said Valve member having communication with said second mentioned inlet port, a liquid paint line communicating with said first mentioned inletport, a stock Combined with said Cylinder, a. grip combined With said valve member, and a. yielding member mounted on said stoel: and pressing on said grip to normally hold the valve member on its back stroke and render the sprayer inactive.

Kansas City, Missouri, May 22nd7 1923.

DANIEL J. SULLIVAN. fitnesses z W. L. MCSPADDEN, H. OCONNELL.

other of theY 

